Floating Touch is a button floats on your screen over other apps, and you can move it anywhere. Floating Touch contains most commonly used switches of Android system and all installed apps, you could control your device or open your favor app easily without exiting current app.
Besides that, you can make it unique by:

Customizing the panel functions, pick your most commonly used switches or favor apps

FAQ:
Why I cannot uninstall Floating Touch?
The “Lock screen” feature requires activating device administrator, you have to deactivate it in security settings before installing.
There are two ways to uninstall it: